It seems to me that the bees are not only evicting their sisters with the deformed wing virus but also the Varroa mites stuck to their back, which will result in many Varroa gone from the hive.
I do understand those who treat their bees, I really do. I mean my heart is not made of stone you know :) I too feel the impulse to "help my bees" and treat them with some organic acid against this beast sucking on them. But I also feel that saving those weak colonies which can't co-adapt with Varroa, will only weaken the gene pool for the next generations. Their Drones might mate with future virgin queens and what will happen then?! Isn't it better to let nature vanish those who cant make it and excel those who can? I think so. Nature has been doing it for so long and I feel we must respect that. Besides pesticides and mono-crop agriculture, breeding weak genes is a serious issue for the bees. We must find a way and energy to reform all 3 aspects mentioned.
But not all sounds gloomy in Che Guebee Apiary :) Some hives are flying strong even now and I see not many bees with DWV being evicted. Now this might be a good sign or ... a bad sign. The winter will decide and I will see next Spring which of them have proven to be worthy to pollinate Nature and spread their genes next year.